/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Composite.Data;

namespace Composite.Forms.Renderer
{
    public class FormsRendererDataScope : IDisposable
    {
        [ThreadStatic]
        private static Stack<IData> list;
        private static Stack<IData> List
        {
            get
            {
                if (list == null)
                {
                    list = new Stack<IData>();
                }
                return list;
            }
        }

        public static IData CurrentData
        {
            get
            {
                if (List.Count == 0)
                    return null;
                return List.Peek();
            }
        }

        public FormsRendererDataScope(IData data)
        {
            List.Push(data);
        }

        #region IDisposable Members

        public void Dispose()
        {
            List.Pop();
        }

        #endregion
    }
}
